Portela, Maria Conceição A. SilvaBorges, Pedro Castro2018-07-302018-07-302001Portela, M. C. A. S., Borges, P. C. (2001). Non-radial efficiency measurement: a review and new insights for free disposal hull technologies. Working papers: Economics. N.º 1, 44 p.http://hdl.handle.net/10400.14/25310engDEAFDHMulti-object optimisationquad treesNon-radial efficiency measurement: a review and new insights for free disposal hull technologiesworking paper